481581851 has 4 divisors (see below), whose sum is σ = 482163600. Its totient is φ = 481000104.

The previous prime is 481581839. The next prime is 481581871. The reversal of 481581851 is 158185184.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 481581851 - 2²⁶ = 414472987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 481581799 and 481581808.

It is not an unprimeable number, because it can be changed into a prime (481581871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289631 + ... + 291288.

It is an arithmetic number, because the mean of its divisors is an integer number (120540900).

Almost surely, 2^481581851 is an apocalyptic number.

481581851 is a deficient number, since it is larger than the sum of its proper divisors (581749).

481581851 is an equidigital number, since it uses as much as digits as its factorization.

481581851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581748.

The product of its digits is 51200, while the sum is 41.

The square root of 481581851 is about 21944.9732512938. The cubic root of 481581851 is about 783.8326875326.

The spelling of 481581851 in words is "four hundred eighty-one million, five hundred eighty-one thousand, eight hundred fifty-one".